let a:number = 10 
let b:string = 'zzz'

let c:Array<string> = ['yi','tao']
c.push('mi')

let d:[string,number,boolean] = ['yiyi',2,true]
console.log(d)

function add(a:number,b:number){
    return  a + b
}

add(20,10)

enum Gender{ Male  = 1 ,Fmale = 2 }
let gender:Gender = Gender.Fmale
console.log(gender)

let e:any = 'aaa'
console.log(e)